Answer :
To reinforce the desired behavior, positive reinforcement is applied. As a result, treating the dog with his favorite food when he rings the bell would reinforce the behavior.
The new behavior is taught using the shaping technique. In shaping, the subject is exposed to a sequence of subsequent reinforcement stages in order to move them increasingly closer to demonstrating the desired behavior.
Positive reinforcement, such as "hugging him/her," should be used when the dog exhibits behavior that is even slightly close to the target behavior.
If the dog behaves in a manner that is more similar to the previous desired behavior, better positive reinforcement should be offered, such as "spending more time to play with him." Any form of positive reinforcement that is more effective than the previous one, such as "letting him eat what he likes," can be given when the dog exhibits the desired behavior.
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